Question

A listing posted by the Arby’s restaurant chain gives, for each of the sandwiches it sells, the type of meat in the sandwich, number of calories, and serving size in ounces. The data might be used to assess the nutritional value of the different sandwiches.

What is the variable name, is it categorical or quantitative, and if quantitative what are the units used?

Answer 1

There are 3 variables here. For each of the 3 variables, we obtain the characteristics of the variables here as:

1) Type of Meat Used: Categorical as it is not numerical and the categories dont have any ordinal value here.

2) Number of calories: Here the number is an integer and there will be an ordinal behaviour to it that is 3 calories is more than 2 and so on.. Therefore this is a quantitative variable here. The unit here is simply the number of sandwiches.

3) The serving size is in ounces, so clearly this is a numerical variable and has ordinal behaviour to it, that is a sandwich with 100 ounces of size is more than a sandwich with 50 ounces of size. Therefore this is a quantitative variable here with unit used as ounces.